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The coupled transmission-line equations for a three-conductor, lossless transmission line are solved in symbolic form for its crosstalk voltages using various approximations [1, 2]. The most frequently-used approximate model for predicting crosstalk is referred to as the Jarvis model after its original publisher in 1963 . The Jarvis model uses three approximations that simplify the result. One of the approximations requires that all four line terminations be matched which is unrealistic for virtually all crosstalk problems.